content: 
  //
  // This file is auto-generated. Please don't modify it!
  //
  package org.opencv.features2d;
  
  import java.lang.String;
  import java.util.ArrayList;
  import java.util.List;
  import org.opencv.core.Mat;
  import org.opencv.core.MatOfKeyPoint;
  import org.opencv.utils.Converters;
  
  // C++: class javaDescriptorExtractor
  //javadoc: javaDescriptorExtractor
  public class DescriptorExtractor {
  
      protected final long nativeObj;
      protected DescriptorExtractor(long addr) { nativeObj = addr; }
  
  
      private static final int
              OPPONENTEXTRACTOR = 1000;
  
  
      public static final int
              SIFT = 1,
              SURF = 2,
              ORB = 3,
              BRIEF = 4,
              BRISK = 5,
              FREAK = 6,
              AKAZE = 7,
              OPPONENT_SIFT = OPPONENTEXTRACTOR + SIFT,
              OPPONENT_SURF = OPPONENTEXTRACTOR + SURF,
              OPPONENT_ORB = OPPONENTEXTRACTOR + ORB,
              OPPONENT_BRIEF = OPPONENTEXTRACTOR + BRIEF,
              OPPONENT_BRISK = OPPONENTEXTRACTOR + BRISK,
              OPPONENT_FREAK = OPPONENTEXTRACTOR + FREAK,
              OPPONENT_AKAZE = OPPONENTEXTRACTOR + AKAZE;
  
  
      //
      // C++:  void compute(Mat image, vector_KeyPoint& keypoints, Mat descriptors)
      //
  
      //javadoc: javaDescriptorExtractor::compute(image, keypoints, descriptors)
      public  void compute(Mat image, MatOfKeyPoint keypoints, Mat descriptors)
      {
          Mat keypoints_mat = keypoints;
          compute_0(nativeObj, image.nativeObj, keypoints_mat.nativeObj, descriptors.nativeObj);
          
          return;
      }
  
  
      //
      // C++:  void compute(vector_Mat images, vector_vector_KeyPoint& keypoints, vector_Mat& descriptors)
      //
  
      //javadoc: javaDescriptorExtractor::compute(images, keypoints, descriptors)
      public  void compute(List<Mat> images, List<MatOfKeyPoint> keypoints, List<Mat> descriptors)
      {
          Mat images_mat = Converters.vector_Mat_to_Mat(images);
          List<Mat> keypoints_tmplm = new ArrayList<Mat>((keypoints != null) ? keypoints.size() : 0);
          Mat keypoints_mat = Converters.vector_vector_KeyPoint_to_Mat(keypoints, keypoints_tmplm);
          Mat descriptors_mat = new Mat();
          compute_1(nativeObj, images_mat.nativeObj, keypoints_mat.nativeObj, descriptors_mat.nativeObj);
          Converters.Mat_to_vector_vector_KeyPoint(keypoints_mat, keypoints);
          keypoints_mat.release();
          Converters.Mat_to_vector_Mat(descriptors_mat, descriptors);
          descriptors_mat.release();
          return;
      }
  
  
      //
      // C++:  int descriptorSize()
      //
  
      //javadoc: javaDescriptorExtractor::descriptorSize()
      public  int descriptorSize()
      {
          
          int retVal = descriptorSize_0(nativeObj);
          
          return retVal;
      }
  
  
      //
      // C++:  int descriptorType()
      //
  
      //javadoc: javaDescriptorExtractor::descriptorType()
      public  int descriptorType()
      {
          
          int retVal = descriptorType_0(nativeObj);
          
          return retVal;
      }
  
  
      //
      // C++:  bool empty()
      //
  
      //javadoc: javaDescriptorExtractor::empty()
      public  boolean empty()
      {
          
          boolean retVal = empty_0(nativeObj);
          
          return retVal;
      }
  
  
      //
      // C++: static javaDescriptorExtractor* create(int extractorType)
      //
  
      //javadoc: javaDescriptorExtractor::create(extractorType)
      public static DescriptorExtractor create(int extractorType)
      {
          
          DescriptorExtractor retVal = new DescriptorExtractor(create_0(extractorType));
          
          return retVal;
      }
  
  
      //
      // C++:  void write(String fileName)
      //
  
      //javadoc: javaDescriptorExtractor::write(fileName)
      public  void write(String fileName)
      {
          
          write_0(nativeObj, fileName);
          
          return;
      }
  
  
      //
      // C++:  void read(String fileName)
      //
  
      //javadoc: javaDescriptorExtractor::read(fileName)
      public  void read(String fileName)
      {
          
          read_0(nativeObj, fileName);
          
          return;
      }
  
  
      @Override
      protected void finalize() throws Throwable {
          delete(nativeObj);
      }
  
  
  
      // C++:  void compute(Mat image, vector_KeyPoint& keypoints, Mat descriptors)
      private static native void compute_0(long nativeObj, long image_nativeObj, long keypoints_mat_nativeObj, long descriptors_nativeObj);
  
      // C++:  void compute(vector_Mat images, vector_vector_KeyPoint& keypoints, vector_Mat& descriptors)
      private static native void compute_1(long nativeObj, long images_mat_nativeObj, long keypoints_mat_nativeObj, long descriptors_mat_nativeObj);
  
      // C++:  int descriptorSize()
      private static native int descriptorSize_0(long nativeObj);
  
      // C++:  int descriptorType()
      private static native int descriptorType_0(long nativeObj);
  
      // C++:  bool empty()
      private static native boolean empty_0(long nativeObj);
  
      // C++: static javaDescriptorExtractor* create(int extractorType)
      private static native long create_0(int extractorType);
  
      // C++:  void write(String fileName)
      private static native void write_0(long nativeObj, String fileName);
  
      // C++:  void read(String fileName)
      private static native void read_0(long nativeObj, String fileName);
  
      // native support for java finalize()
      private static native void delete(long nativeObj);
  
  }
  